Science : Ch 11 – The Human Eye and the Colourful World

At noon, the Sun looks white as:

Which of the following statements is correct regarding the propagation of light of diferent colours of white light in air?

The red colour of the sun at the time of sunrise and sunset is because:

Power of a lens is the measure of the degree of

Ankit remarked that he has seen wavering of objects when seen through a stream of hot air rising above a tandoor or a fire. He said that the air just above the fire becomes hotter than the air further higher up. He further said that this wavering can also be seen in the earth’s atmosphere as the earth’s atmosphere is not evenly distributed and several observations can be explained on the basis of this phenomenon,name the phenomeoneon

Milk is a colloid that contains globules of fat and protein. When a beam of light is directed at a glass of milk the light is scattered. That is a great example

When a fine beam of sunlight enters a smoke filled room, smoke particles become visible due to scattering of light by these particles

Effect produced by scattering of light by the atmosphere.

Why is red used as the stopping light at traffic signals?

Myopia can be corrected by using

Astigmatism can be corrected

Rainbow is caused due to

A concave lens of short focal length has greater

The SI unit of Power of a lens is

The emergent ray in a prism bend at an angle to the direction of the